As 'The X Factor' comes to an end this week, I wonder what will become of the show in its third season. Even though Simon Cowell and Demi Lovato bicker like a petulant teenager and irksome uncle, I quite like their relationship. I never thought they would share much chemistry, but the 'X Factor' duo has been delightful to watch, which made me think of other pairs on other shows that have been a surprising treat.